There's no better forum for evaluating prospects than the annual Arizona Fall League. With players from all 30 organizations comprising six teams, the Fall League offers the unique opportunity to gauge young talent against competition that usually is superior to what they experienced during the Minor League season.
The preliminary rosters for this year's Fall League, released Wednesday, are loaded with future stars, including 21 players currently ranked on MLBPipeline.com's Top 100 Prospects list, and even more who could contend for such a ranking in 2017 in the wake of a strong fall campaign.
But of all the talent selected to participate in this year's Fall League, these 10 prospects are the ones I most look forward to seeing.
Cody Bellinger, 1B/OF (Glendale Desert Dogs)
Dodgers' No. 1 | No. 34 overall
After a breakout 2015 full-season debut that saw him belt 30 homers in the California League, Bellinger, in his age-20 campaign, has continued his surge towards the big leagues this year by posting an .843 OPS with 22 home runs in Double-A. He's also proven to be a very capable outfielder, seeing time in center field as well as both corner spots.

Isan Diaz, SS/2B (Salt River Rafters)
Brewers' No. 10
One of only three AFL selections currently playing in Class A ball, Diaz's power potential from an up-the-middle position makes him one of the most intriguing position players to watch in this year's league. In his full-season debut with Class A Wisconsin, the 20-year-old left-handed hitter is pacing the Midwest League with 20 home runs and driving balls outs of the park from line to line. He also ranks second in the circuit with 71 walks.

Luiz Gohara, LHP (Peoria Javelinas)
Mariners' No. 5
Gohara has taken the step forward this season that scouts have long expected from the big Brazilian left-hander, who's demonstrated improved feel and control of his arsenal while making a smooth transition to full-season ball. After celebrating his 20th birthday on July 31, Gohara will be one of the youngest pitchers in this year's Fall League.

Brent Honeywell, RHP (Peoria Javelinas) 
Rays' No. 2 | No. 42 overall
Honeywell might have been largely unknown when the Rays selected him 72nd overall in the 2014 Draft -- save for that he boasted a legitimate screwball -- but the 21-year-old righty has quickly emerged as one of the best right-handed pitching prospects in the Minors. He's been particularly good since making the jump to Double-A at midseason, and it's easy to envision him building on that success in the Fall League.

Eloy Jimenez, OF (Mesa Solar Sox) 
Cubs' No. 2 | No. 25 overall
Jimenez announced himself to a national audience during this year's SiruisXM All-Star Futures Game with a tape-measure home run and phenomenal catch in right field -- a fair representation of the 19-year-old outfielder's immense tools and high ceiling. The Midwest League MVP has put up the supporting numbers, too, with a .331/.371/.536 slash line, 57 extra-base hits, 14 home runs and 81 RBIs for Class A South Bend.

Michael Kopech, RHP (Surprise Saguaros) 
Red Sox's No. 5 | No. 73 overall
Kopech will be using the Fall League to make up for lost time after he missed the first two months with a broken right hand suffered in an altercation with a teammate during Spring Training. The injury certainly didn't impact the 20-year-old righty's velocity, though, as he reportedly fired a 105 mph fastball during his July 13 start for Class A Advanced Salem. Kopech has dominated during his time in the Carolina League, registering 82 strikeouts in 52 innings while holding opposing hitters to a .147 average.

MILB Video - Title: Watch: Kopech strikes out the side - Url: http://www.milb.com/r/video?content_id=907325483

Tyler O'Neill, OF (Peoria Javelinas) 
Mariners' No. 2 | No. 64 overall
A more refined and consistent approach has enabled O'Neill to better tap into his natural hitting ability this season. It's also the reason the 21-year-old outfielder is contending for the Southern League's Triple Crown, as he currently ranks among the top three on the circuit with his .294 average (tied for third), 24 home runs (second) and 100 RBIs (first) -- the latter marking a Double-A Jackson single-season franchise record. His batting practice is a sight to behold, and you won't see him hit many cheap homers in games either.

Christin Stewart, OF (Salt River Rafters) 
Tigers' No. 3
Arguably the best power hitter from the 2015 Draft, Stewart's light-tower power translated about as well as could have been expected this year in the pitcher-friendly Florida State League, where he's still pacing the circuit with 24 home runs after being promoted to Double-A on July 31. And much like O'Neill, he's been known to elicit gasps from onlookers with his batting practice.

Gleyber Torres, SS (Scottsdale Scorpions) 
Yankees' No. 2 | No. 19 overall
Acquired from the Cubs on July 25 as part of the Aroldis Chapman trade, Torres, 19, has shown more power this year against older competition in the Class A Advanced Carolina and Florida State Leagues. More significant, he's done so without compromising his ability to hit for average and get on base.

Bradley Zimmer, OF (Mesa Solar Sox) 
Indians' No. 1 | No. 27 overall
A hairline fracture in Zimmer's right foot impacted his second-half production at Double-A in 2015 and then kept him from participating in the Fall League. But health hasn't been a problem for the 23-year-old outfielder this season, as he's continued to showcase a high-end blend of power and speed, beginning the year in the Eastern League before moving up to Triple-A in late July.